Belt-lifter for bull-wheels.



E. PETERSON.

BELT LIFTER FOR BULL WHEELS.

APPLICATION FILED DEC. 6, 1911.

1913mm Patented Mar.23,1915.

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EDWARD PETERSON, 0F ARLINGTON, TEXAS.

BELT-LIFTER FOR BULL-WHEELS.

Specification of Letters Patent.

Patented Mar. 23, 19 15.

Application filed December 6, 1911. Serial No. 664,192.

To all whom it may concern:

Be it known that I, EDWARD PETERSON, a citizen of the United States, residing at Arlington, in the county of Tarrant and State of Texas, have invented new and useful Improvements in Belt-Lifters for Bull- Wheels, of which the following is a specification.

This invention relates to belt lifters for bull wheels, and it has for its objects to produce a simple and eflicient belt manipulating device peculiarly adapted to be used in connection with bull wheels of well drilling machinery.

With these and other ends in view which will readily appear as the nature of the invention is better understood, the same consists in the improved construction and novel arrangement and combination of parts which will be hereinafter fully described and particularly pointed out in the claims.

In the accompanying drawings has been illustrated a simple and preferred form of the invention, it being, however, understood that no limitation is necessarily made to the precise structural details therein exhibited, but that changes, alterations and modifications within the scope of the claims may be resorted to when desired.

In the drawings,-Figure 1 is a side elevation showing the improved bull wheel complete. Fig. 2 is an end view of the driving wheel. Fig. 3 is a sectional detail view taken on the line 99 in Fig. 2. Fig. 4 is a sectional detail view taken on the line 10-10 in Fig. 2.

Corresponding parts in the several figures are denoted by like characters of reference.

The drum or core 1 which carries the driving wheel 2 and the brake Wheel 3 is provided at its ends with caps t having gudgeons 5 whereby it may be supported for rotation. The drum is provided with portions of octagonal cross section for the attachment of the spokes carrying the rims of the respective wheels. The driving wheel and the brake wheel are essentially of similar construction, difi'ering mainly in this that the driving wheel is provided with the rope-supporting dogs 6 and with the throw-off 7, said dogs and throw-ofi' being mounted on some of the spokes. The rope supporting dogs 6 which are secured on the flat faces of some of the spokes each consist of a V-shaped bracket, the limbs of which are attached to the faces of the spokes, the apex of each bracket projecting laterally adjacent to one side of the wheel, thus presenting a supporting member or shoulder of great strength and which, by slightly curving the outermost limb of the bracket member will present a slightly concave support wherein a rope may securely rest without danger of being accidentally dislodged. The throw-ofii is composed of a metallic strap which is doubled upon itself, the ends of said strap being positioned adjacent to the opposite sides or faces of one of the spokes with which the said ends are connected by means of a pin or pivot 7 extending therethrough so that the loop constituting said throw-ofii and which normally extends beyond the perimeter of the wheel, as clearly seen in Figs. 2 and 1, may be moved outward with respect to the side face of the wheel adjacent to which it is located.

Each wheel is provided with eight spokes S which may be constructed either of wood or metal, each of said spokes consisting of a flat rectangular bar of suitable dimensions. The said spokes are arranged in pairs, bolted to diametrically opposite faces of an octagonal portion 8 of the drum. Each pair of spokes is secured by means of four bolts extending through the drum, and in order to prevent the bolts from interfering the apertures for the passage of said bolts are arranged in the manner illustrated in Fig. 5, by reference to which it will be seen that the apertures 9 in the several spokes are arranged in such a manner that the bolts passing therethrough and through the octagonal portion of the drum will not interfere with each other. Each of the spokes carries at its outer end two angle plates 10, 11, said angle plates being bolted upon opposite sides of the spoke, and said angle plates serving to support a U-shaped clamp 12, said clamp being bolted, riveted or otherwise firmly secured upon the angle plates. The U-shaped clamps serve to support the fellies 13, each of which is made up of a plurality of cants 14:, said fellies being secured in the Ushaped clamps by transverse bolts or rivets 15. The perimeter of the driving wheel is provided with grooves 16 for the reception of a cable by means of which rotary motion may be communicated from a suitable source of power. The throw-off 7 which is pivoted upon one of the spokes, consists of a strap of metal doubled upon itself to form a loop 17 Wheel.

In order to mount a rope on the bull wheel, said Wheel is rotated by hand, and the rope is successively mounted on the laterally projecting shoulders of the dogs 6 which will serve to lift the weight of the rope until the operator can convenientl place it in one ofthe grooves 16. When the rope is pried oil the wheel it may be caught on the throwoff, thelapped portion of which is seized by the hand of the operator who is thus enabled to guide the rope in removing it from the wheel. The rope or cable which is heavy and unwieldy may thus be conveniently handled as required. When applying the rope to the drum, the throw-off loop may be utilized to assist in transferring the rope from the offsets or shoulders of the dogs 6 to the rim of the wheel; on the other hand, in detaching the rope the throw-0E loop may be utilized in first transferring the rope from the rim ofthe wheel to the shoulders oroffsets of the dogs and then from the latter to the ground, thus making the operation gradual and easily performed.

As will be seen from the foregoing description, a durable and efficient bull wheel may beconstructed in accordance with this invention at a moderate expense, and the parts may be readily knocked down and re assembled for convenience in shipment.

Having thus described the invention, what is claimed as new, is

1. A bull wheel having a plurality of broad flat spokes, and a rim supported thereby, in combination with V-shaped dogs secured on the faces of some of the spokes, said V-shaped dogs having curved outer limbs presenting concaved shoulders that project beyond the side of the wheel.

:2. A bull wheel having a plurality of broad flat spokes, and a rim supported thereby, in combination with V-shaped dogs secured onthe faces of some of the spokes, said V-shaped dogs having curved outer limbs presenting concaved shoulders that 7 project beyond the side of the wheel, and a throw-off loop composed of a strap of material doubled upon itself and terminally pivoted on one of the spokes with the looped portion projecting beyond the perimeter of the wheel.

3. The combination with a bull wheel having broad flat spokes, of a throw-off loop consisting of a strip of material bent upon itself and having limbs terminally positioned adjacent to opposite faces of one of the spokes with which said limbs are pivotally connected, the looped portion of said member projecting beyond the perimeter of the wheel.

In testimony whereof I afliX my signature in presence of two witnesses.

EDWARD PETERSON. Witnesses E. P. O. NEILL, A. WV. PnAnsALL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

